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<div class="refentry">
<a name="gst-plugins-good-plugins-smpte"></a><div class="titlepage"></div>
<div class="refnamediv"><table width="100%"><tr>
<td valign="top">
<h2><span class="refentrytitle"><a name="gst-plugins-good-plugins-smpte.top_of_page"></a>smpte</span></h2>
<p>smpte</p>
</td>
<td class="gallery_image" valign="top" align="right"></td>
</tr></table></div>
<div class="refsect1">
<a name="gst-plugins-good-plugins-smpte.properties"></a><h2>Properties</h2>
<div class="informaltable"><table class="informaltable" border="0">
<colgroup>
<col width="150px" class="properties_type">
<col width="300px" class="properties_name">
<col width="200px" class="properties_flags">
</colgroup>
<tbody>
<tr>
<td class="property_type"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint"><span class="type">gint</span></a></td>
<td class="property_name"><a class="link" href="gst-plugins-good-plugins-smpte.html#GstSMPTE--border" title="The “border” property">border</a></td>
<td class="property_flags">Read / Write</td>
</tr>
<tr>
<td class="property_type"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint"><span class="type">gint</span></a></td>
<td class="property_name"><a class="link" href="gst-plugins-good-plugins-smpte.html#GstSMPTE--depth" title="The “depth” property">depth</a></td>
<td class="property_flags">Read / Write</td>
</tr>
<tr>
<td class="property_type"><span class="type">GstSMPTETransitionType</span></td>
<td class="property_name"><a class="link" href="gst-plugins-good-plugins-smpte.html#GstSMPTE--type" title="The “type” property">type</a></td>
<td class="property_flags">Read / Write</td>
</tr>
<tr>
<td class="property_type"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint64"><span class="type">guint64</span></a></td>
<td class="property_name"><a class="link" href="gst-plugins-good-plugins-smpte.html#GstSMPTE--duration" title="The “duration” property">duration</a></td>
<td class="property_flags">Read / Write</td>
</tr>
<tr>
<td class="property_type"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a></td>
<td class="property_name"><a class="link" href="gst-plugins-good-plugins-smpte.html#GstSMPTE--invert" title="The “invert” property">invert</a></td>
<td class="property_flags">Read / Write</td>
</tr>
</tbody>
</table></div>
</div>
<a name="GstSMPTE"></a><div class="refsect1">
<a name="gst-plugins-good-plugins-smpte.other"></a><h2>Types and Values</h2>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="name">
<col class="description">
</colgroup>
<tbody><tr>
<td class="datatype_keyword">struct</td>
<td class="function_name"><a class="link" href="gst-plugins-good-plugins-smpte.html#GstSMPTE-struct" title="struct GstSMPTE">GstSMPTE</a></td>
</tr></tbody>
</table></div>
</div>
<div class="refsect1">
<a name="gst-plugins-good-plugins-smpte.object-hierarchy"></a><h2>Object Hierarchy</h2>
<pre class="screen"> <a href="/usr/share/gtk-doc/html/gobject/gobject-The-Base-Object-Type.html#GObject-struct">GObject</a>
<span class="lineart">╰──</span> <a href="/usr/share/gtk-doc/html/gobject/gobject-The-Base-Object-Type.html#GInitiallyUnowned">GInitiallyUnowned</a>
<span class="lineart">╰──</span> <a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstObject.html#GstObject-struct">GstObject</a>
<span class="lineart">╰──</span> <a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstElement.html#GstElement-struct">GstElement</a>
<span class="lineart">╰──</span> GstSMPTE
</pre>
</div>
<div class="refsect1">
<a name="gst-plugins-good-plugins-smpte.description"></a><h2>Description</h2>
<p>smpte can accept I420 video streams with the same width, height and
framerate. The two incomming buffers are blended together using an effect
specific alpha mask. </p>
<p>The <span class="type">“depth”</span> property defines the presision in bits of the mask. A
higher presision will create a mask with smoother gradients in order to avoid
banding.</p>
<div class="refsect2">
<a name="id-1.2.232.7.4"></a><h3>Sample pipelines</h3>
<div class="informalexample">
<table class="listing_frame" border="0" cellpadding="0" cellspacing="0">
<tbody>
<tr>
<td class="listing_lines" align="right"><pre>1</pre></td>
<td class="listing_code"><pre class="programlisting">gst<span class="gtkdoc opt">-</span>launch<span class="gtkdoc opt">-</span><span class="number">1.0</span> <span class="gtkdoc opt">-</span>v videotestsrc pattern<span class="gtkdoc opt">=</span><span class="number">1</span> <span class="gtkdoc opt">!</span> smpte name<span class="gtkdoc opt">=</span>s border<span class="gtkdoc opt">=</span><span class="number">20000</span> type<span class="gtkdoc opt">=</span><span class="number">234</span> duration<span class="gtkdoc opt">=</span><span class="number">2000000000</span> <span class="gtkdoc opt">!</span> videoconvert <span class="gtkdoc opt">!</span> ximagesink videotestsrc <span class="gtkdoc opt">!</span> s<span class="gtkdoc opt">.</span></pre></td>
</tr>
</tbody>
</table>
</div>
A pipeline to demonstrate the smpte transition.
It shows a pinwheel transition a from a snow videotestsrc to an smpte
pattern videotestsrc. The transition will take 2 seconds to complete. The
edges of the transition are smoothed with a 20000 big border.
</div>
<div class="refsynopsisdiv">
<h2>Synopsis</h2>
<div class="refsect2">
<a name="id-1.2.232.7.5.1"></a><h3>Element Information</h3>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody>
<tr>
<td><p><span class="term">plugin</span></p></td>
<td>
<a class="link" href="gst-plugins-good-plugins-plugin-smpte.html#plugin-smpte">smpte</a>
</td>
</tr>
<tr>
<td><p><span class="term">author</span></p></td>
<td>Wim Taymans <wim.taymans@chello.be></td>
</tr>
<tr>
<td><p><span class="term">class</span></p></td>
<td>Filter/Editor/Video</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="id-1.2.232.7.5.2"></a><h3>Element Pads</h3>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody>
<tr>
<td><p><span class="term">name</span></p></td>
<td>sink1</td>
</tr>
<tr>
<td><p><span class="term">direction</span></p></td>
<td>sink</td>
</tr>
<tr>
<td><p><span class="term">presence</span></p></td>
<td>always</td>
</tr>
<tr>
<td><p><span class="term">details</span></p></td>
<td>video/x-raw, format=(string)I420, width=(int)[ 1, 2147483647 ], height=(int)[ 1, 2147483647 ], framerate=(fraction)[ 0/1, 2147483647/1 ]</td>
</tr>
</tbody>
</table></div>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody>
<tr>
<td><p><span class="term">name</span></p></td>
<td>sink2</td>
</tr>
<tr>
<td><p><span class="term">direction</span></p></td>
<td>sink</td>
</tr>
<tr>
<td><p><span class="term">presence</span></p></td>
<td>always</td>
</tr>
<tr>
<td><p><span class="term">details</span></p></td>
<td>video/x-raw, format=(string)I420, width=(int)[ 1, 2147483647 ], height=(int)[ 1, 2147483647 ], framerate=(fraction)[ 0/1, 2147483647/1 ]</td>
</tr>
</tbody>
</table></div>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody>
<tr>
<td><p><span class="term">name</span></p></td>
<td>src</td>
</tr>
<tr>
<td><p><span class="term">direction</span></p></td>
<td>source</td>
</tr>
<tr>
<td><p><span class="term">presence</span></p></td>
<td>always</td>
</tr>
<tr>
<td><p><span class="term">details</span></p></td>
<td>video/x-raw, format=(string)I420, width=(int)[ 1, 2147483647 ], height=(int)[ 1, 2147483647 ], framerate=(fraction)[ 0/1, 2147483647/1 ]</td>
</tr>
</tbody>
</table></div>
</div>
</div>
</div>
<div class="refsect1">
<a name="gst-plugins-good-plugins-smpte.functions_details"></a><h2>Functions</h2>
<p></p>
</div>
<div class="refsect1">
<a name="gst-plugins-good-plugins-smpte.other_details"></a><h2>Types and Values</h2>
<div class="refsect2">
<a name="GstSMPTE-struct"></a><h3>struct GstSMPTE</h3>
<pre class="programlisting">struct GstSMPTE;</pre>
</div>
</div>
<div class="refsect1">
<a name="gst-plugins-good-plugins-smpte.property-details"></a><h2>Property Details</h2>
<div class="refsect2">
<a name="GstSMPTE--border"></a><h3>The <code class="literal">“border”</code> property</h3>
<pre class="programlisting"> “border” <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint"><span class="type">gint</span></a></pre>
<p>The border width of the transition.</p>
<p>Flags: Read / Write</p>
<p>Allowed values: >= 0</p>
<p>Default value: 0</p>
</div>
<hr>
<div class="refsect2">
<a name="GstSMPTE--depth"></a><h3>The <code class="literal">“depth”</code> property</h3>
<pre class="programlisting"> “depth” <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint"><span class="type">gint</span></a></pre>
<p>Depth of the mask in bits.</p>
<p>Flags: Read / Write</p>
<p>Allowed values: [1,24]</p>
<p>Default value: 16</p>
</div>
<hr>
<div class="refsect2">
<a name="GstSMPTE--type"></a><h3>The <code class="literal">“type”</code> property</h3>
<pre class="programlisting"> “type” <span class="type">GstSMPTETransitionType</span></pre>
<p>The type of transition to use.</p>
<p>Flags: Read / Write</p>
<p>Default value: A bar moves from left to right</p>
</div>
<hr>
<div class="refsect2">
<a name="GstSMPTE--duration"></a><h3>The <code class="literal">“duration”</code> property</h3>
<pre class="programlisting"> “duration” <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint64"><span class="type">guint64</span></a></pre>
<p>Duration of the transition effect in nanoseconds.</p>
<p>Flags: Read / Write</p>
<p>Default value: 1000000000</p>
</div>
<hr>
<div class="refsect2">
<a name="GstSMPTE--invert"></a><h3>The <code class="literal">“invert”</code> property</h3>
<pre class="programlisting"> “invert” <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a></pre>
<p>Invert transition mask.</p>
<p>Flags: Read / Write</p>
<p>Default value: FALSE</p>
</div>
</div>
</div>
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